Troika is a London-based art and design studio run by Conny Freyer, Eva Rucki and Sebastien Noel. They were recently commissioned by British Airways to produce a new project entitled "Cloud" for the luxury lounges in Heathrow Terminal 5. See below for a statement from Troika about the sculpture:

...'Cloud' [is] a five meter long digital sculpture whose surface is covered with 4638 flip-dots that can be individually addressed by a computer to animate the entire skin of the sculpture. Flip-dots were conventionally used in the 70s and 80s to create signs in train-stations and airports. We were fascinated by their materiality, by the way they physically flip from one side to the other. The sound they generate is also instantly reminiscent of travel, and we therefore decided to explore their aesthetic potential in 'Cloud'...

We started to work on the metaphor of clouds as one's flies, and the contrast which exists between the busy, hectic airport experience, and the calm, luminous and ethereal world which we discover as we fly through this dense layer. Another of our inspiration came from the old electromagnetic flip-dots which were used in railways and airport signs from the mid 70s. Those signs, with their characteristic flicking noise which instantly reminds us of travel, represent to us a golden age of technology, when analogue and digital started to merge. The indicators, dots which can flip from one side to the other with an electric impulse, have a fantastic materiality, a physicality which more modern technologies often lack, de-materialised into the virtual...